Infineon Technologies BCX6825E6327HTSA1

Overview

BCX6825E6327HTSA1 from Infineon Technologies is an NPN silicon bipolar junction transistor (BJT) designed for general-purpose audio-frequency switching and amplification. It delivers 1 A continuous collector current, 250–375 DC current gain (h_FE) at I_C = 1 A / V_CE = 1 V, 0.5 V max V_CE(sat), and operates up to 150 °C junction temperature in SOT-89 package. It is used in automotive body control modules for relay driver stages.

For engineers reviewing the BCX6825E6327HTSA1 datasheet, BCX6825E6327HTSA1 pinout, BCX6825E6327HTSA1 application, or BCX6825E6327HTSA1 equivalent, key selection criteria include verified V_CE(sat) ≤ 0.5 V at 1 A drive, h_FE ≥ 250 under high-current bias, thermal resistance R_thJS ≤ 12 K/W, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This transistor operates as a medium-power NPN switch with complementary PNP pairing via BCX69 series. Its design emphasizes low saturation voltage and high current gain stability across temperature - confirmed by h_FE min = 250 at I_C = 1 A and V_CE = 1 V, and V_CE(sat) ≤ 0.5 V under same conditions.

Thermal performance is defined by R_thJS ≤ 12 K/W and maximum junction temperature of 150 °C, enabling operation in thermally constrained PCB layouts. The device meets AEC-Q101 stress testing requirements for automotive electronics, including temperature cycling and humidity bias.

Key Specifications

Pinout & Package

SOT-89 surface-mount package with 3-pin configuration: compact footprint (4.5 × 2.75 mm), exposed emitter pad for thermal conduction, and standardized tape-and-reel packaging (1000 pcs/reel, ø180 mm).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching transistor applications.

Compared with BCX6816E6327HTSA1 and ZTX653STZ, BCX6825E6327HTSA1 uniquely balances 1 A capability, ≥250 h_FE, ≤0.5 V V_CE(sat), and AEC-Q101 compliance - making it optimal for thermally constrained, high-reliability 12 V automotive switches.

Availability

BCX6825E6327HTSA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and LED lighting drivers requiring stable component supply across long production lifecycles.

Supply support for BCX6825E6327HTSA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.

BCX6825E6327HTSA1 belongs to Infineon's BCX68 family of AEC-Q101-qualified general-purpose NPN transistors, engineered specifically for reliable, low-loss switching in 12 V automotive subsystems.

FAQ

Is BCX6825E6327HTSA1 pin-compatible with BCX6816 or BCX6810?

Yes - all BCX68 variants share identical SOT-89 pinout (Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter). However, h_FE and V_CE(sat) differ significantly: BCX6825 guarantees h_FE ≥ 250 at 1 A, while BCX6816 only guarantees ≥100 at 500 mA. Direct substitution requires verification of base drive capability.

What is the maximum allowable PCB temperature for continuous 1 A operation?

At 1 A and V_CE(sat) = 0.5 V, power dissipation is 0.5 W. With R_thJS ≤ 12 K/W and T_j(max) = 150 °C, the maximum permissible soldering point temperature (T_S) is 114 °C - matching the rated limit in the datasheet. Derating is required above this board temperature.

Does BCX6825E6327HTSA1 support pulsed operation beyond 1 A?

Yes - peak collector current I_CM is rated at 2 A for pulse widths ≤ 10 ms (duty cycle ≤ 2 %). Pulse derating curves confirm 2.5× DC current is permissible for short durations, provided T_j remains ≤ 150 °C and thermal mass prevents cumulative heating.

Can BCX6825E6327HTSA1 replace BCX69 in a complementary pair?

No - BCX6825 is NPN; BCX69 is its PNP complement. They share identical SOT-89 package and voltage/current ratings but opposite polarity. Using BCX6825 as a drop-in replacement for BCX69 would reverse circuit functionality and cause failure. Always match polarity in push-pull or H-bridge designs.